JP2002297418A - Operation control device, operation control system and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation control device that can easily construct a front end processor for relaying an operation request regarding an arbitrary operation object. SOLUTION: The operation control devices A1, A2,... receive operation requests regarding various databases 110, 120,..., and have functions as the front end processors that make back end processors execute operations according to respective databases 110, 120,.... In mapping rule prescribing parts 410, 420,..., the relationships between the operation names for respective databases 110, 120,... and the names of the functions to be executed with the back end processor are prescribed as mapping rules. Operation calling parts 310, 320,... designate, according to operation requests to the databases 110, 120,..., the function that the back end processor should execute on the basis of the mapping rule.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device, an operation control system, and a computer program as a front-end processor having a function as a front-end processor for transferring operation requests to a database or the like on a computer.

[0002]

2. Description of the Related Art In recent years, application programs executed on computers have become larger and more complex as the processing capabilities of computers have improved.
With the spread of networks, the Internet, LAN (Local Area Network) and WAN (Wid
An application program that can operate on a network such as an e-Area Network has been realized. When developing a large-scale and complex application program in such a situation, it is common to construct a whole application program by combining a plurality of program modules and system software that describe a specific processing procedure. It is commonly used.

[0003] As an example, a database management system is provided with a back-end processor as a database server that provides a data operation function to a database to be operated. A back-end processor for the procedure is provided. In addition, a front-end processor as an application program is used to receive an operation request for a heterogeneous database and cause each back-end processor to execute a common operation according to an operation procedure corresponding to the request. That is, the front-end processor is generally constructed by combining a plurality of program modules corresponding to various back-end processors so as to correspond to various databases.

[0004]

However, as described above, in order to construct a front-end processor corresponding to various databases, a plurality of program modules corresponding to various back-end processors must be combined. There has been a problem that the configuration of the entire application program becomes complicated, making it difficult to construct a front-end processor. Of course, similar problems are raised not only for front-end processors for database operations but also for front-end processors for data and object operations that depend on back-end processors, and are configured in combination with multiple program modules and system software. Such a front-end processor cannot be easily constructed because of its large scale and complexity depending on the type of operation target.

[0005]

DISCLOSURE OF THE INVENTION Accordingly, the present invention has been conceived in view of the above-mentioned circumstances, and is an operation capable of easily constructing a front-end processor for transferring an operation request to an arbitrary operation target. It is an object to provide a control device, an operation control system, and a computer program.

In order to solve the above problems, the present invention provides:
The following technical measures have been taken:

According to a first aspect of the present invention, an operation control device having a function as a front-end processor for receiving an operation request for an arbitrary operation target and causing a back-end processor to execute an operation corresponding to each operation target. A mapping rule defining means for defining, as a mapping rule, a correspondence between a type of an operation request for an arbitrary operation target and an execution operation by a back-end processor; and a back-end in response to an operation request for the arbitrary operation target. There is provided an operation control device comprising: an execution operation specifying unit that specifies an operation to be executed by a processor based on a mapping rule defined by a mapping rule defining unit.

According to a preferred embodiment, there are a plurality of back-end processors whose operation procedures are different for each corresponding operation object, and each back-end processor has various executable operation procedures in a set of functions. The execution operation designation means designates the above-mentioned function corresponding to the operation request to each of the back-end processors based on the mapping rule.

According to another preferred embodiment, the mapping rule defining means and the execution operation designating means are provided as a pair for each operation target.

Further, according to the second aspect of the present invention, an operation having a function as a front-end processor for receiving an operation request for an arbitrary operation target and causing the back-end processor to execute an operation corresponding to each operation target. A control system, comprising: a mapping rule defining unit that defines a correspondence relationship between a type of an operation request for an arbitrary operation target and an execution operation by a back-end processor as a mapping rule; An operation control system is provided, comprising: an execution operation designating unit that designates an operation to be executed by the back-end processor based on a mapping rule defined by the mapping rule defining unit.

Further, according to a third aspect of the present invention,
A computer program as a front-end processor that receives an operation request for an arbitrary operation target and causes a back-end processor to execute an operation corresponding to each operation target, and a type of the operation request for the arbitrary operation target,
The correspondence with the execution operation by the backend processor is
A mapping rule defining program for defining as a mapping rule and an operation to be executed by the back-end processor in response to an operation request for an arbitrary operation target are specified based on a mapping rule defined according to the mapping rule defining program. And an execution operation designating program for the computer.

That is, according to the first to third aspects of the present invention, the correspondence between the type of operation request for an arbitrary operation target and the operation to be executed by the back-end processor in response to each operation request is determined. It is defined as a mapping rule, and an operation corresponding to an operation request can be designated and executed by the back-end processor based on the mapping rule. For example, in order to build a front-end processor as an application program corresponding to various databases, it is not necessary to combine a plurality of program modules corresponding to various back-end processors.
Since the application program as a whole has a relatively simple configuration, it is possible to easily construct a front-end processor for transferring an operation request to an arbitrary database. Of course, the same effect can be obtained not only for a front-end processor for database operation but also for a front-end processor for data or object operation depending on a back-end processor.

In response to an operation request, a function prepared for each back-end processor is specified based on a mapping rule, and each back-end processor is operated according to an operation procedure described by such a function. it can.

The reason why the name of the invention is an operation control device or an operation control system is that the invention of the present application can be applied to, for example, a portable telephone or a portable information terminal. It should not be construed to apply only to computer network systems.

Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of the operation control device according to the present invention. The operation control device A according to the present embodiment includes a database 1 to be operated.
0, a back-end processor as a database server for performing data operations on the database 10, and a front-end as an application program for receiving an operation request from a user or the like for the database 10 and causing the back-end processor to execute the data operation in accordance with the request. It is configured by a computer device having a processor and the like. Here, the computer device is
Since it is widely known in general, its well-known configuration and function will not be described. In the present embodiment, a CPU that operates based on a specific computer program (front-end processor) also functions as a back-end processor. However, since the functions of the front-end processor and the back-end processor are distinctive, Points will be described in detail below. In FIG. 1, the main functional units of the back-end processor are indicated by a mapping code 20, and the main functional units of the front-end processor are designated by an operation calling unit (execution operation designating unit) 30 and a mapping rule defining unit (mapping rule defining unit). Indicated by 40.

The database 10 is structured so that data and objects (encapsulating data and methods as procedures for handling the data) are structured so that they can be easily handled. Databases, network databases, relational databases, etc. In general,
The database 10 depends on the back-end processor that built it. For example, different types of databases constructed based on back-end processors of different vendors have different data manipulation mechanisms such as data search and deletion.

The back-end processor is a database 1
0, which directly executes data operations such as data search and deletion, and is actually composed of a collection of program modules (hereinafter, referred to as "mapping") in which various operation procedures that can be executed are described as mapping functions. 20). More specifically, a mapping function refers to an operation procedure such as searching or deleting data, such as "searchData" or "deleteDa".
It is prepared in advance with a unique operation name depending on the back-end processor such as "ta". Further, the mapping function includes a function that describes an algorithm of an operation procedure using a unique operation name depending on the back-end processor. Based on such a mapping function, the back-end processor performs data operations such as search and deletion on the database 10.

The front-end processor is constructed to receive an operation request to the database 10 from a user or an external device via a network, and to specify an operation to be executed by the back-end processor in response to the request. The main function unit includes an operation calling unit 30 and a mapping rule defining unit 40. Specifically, the mapping rule defining unit 40 stores a mapping rule that defines a correspondence between an operation name indicating a type of an operation request and a mapping function name to be executed by the back-end processor. The operation name is a name assigned to various operation requests, for example, “search” for data.
There are "search" and "delete" corresponding to "delete". The mapping function name is a name given to specify one mapping function from the above mapping code in accordance with one operation name, for example, “searchDa
ta "and" deleteData ". The operation calling unit 30
When an external operation request to the database 10 is received, a mapping function name is searched for from a mapping rule based on an operation name corresponding to the operation request, and a mapping function as an entity corresponding to the mapping function name is searched for from a mapping code. . If a corresponding mapping function exists, the operation calling unit 30 calls the mapping function and works to cause the back-end processor to execute a data operation. As a result, the back-end processor actually performs a data operation on the database 10 according to the operation request.

Next, FIG. 2 is an explanatory diagram for explaining an operation control system in which operation control devices are hierarchized as an example. Each of the operation control devices A1 to A6 shown in this figure has basically the same configuration as the operation control device A shown in FIG. 1, and from A1 to A4 via A2 and A4.
It is hierarchized via a network so that an operation request can be transmitted from A to A5 to A6 via A3. Each of the operation control devices A1 to A6 is provided with a table (not shown) indicating which device (node) subordinate to which the operation request should be transmitted. An operation request is transmitted.

The databases 110, 120, 130, 140, and 15 in each of the operation control devices A1 to A6.
0, 160 and mapping codes 210, 220, 23
The numbers 0, 240, 250, and 260 may be exactly the same, or may include different contents.
For example, in the operation control device A1 of the highest node, a mapping function as a search algorithm of the breadth-first search is included in the mapping code 210, whereby the subordinate nodes are searched widely, while the operation control device A of the lowest node is searched.
In A4, A5, and A6, mapping functions used as search algorithms for depth-first search are mapping codes 240, 25.
0, 260, which may be used to search the own node deeply. In addition, different types of databases 110, 120, 130, 140, 150, and 160 are used depending on the back-end processors of different vendors, and mapping codes 210, 220, 230, and 24 are used.
0, 250, and 260 may include mapping functions different from each other. According to the present embodiment, a particularly excellent effect is exhibited in such a case, which will be described in detail below.

Next, the operation of each of the operation control devices A1 to A6 will be described with reference to the drawings.

FIG. 3 is a flowchart showing an operation procedure of data operation processing executed by each of the operation control devices A1 to A6. As shown in FIG. 3, the CPU serves as a front-end processor for a user or the like as a front-end processor. When an operation request is received as an operation name (opn) and an argument (oprd) (S1), the mapping rule is searched using the operation name (opn) as a key (S2). That is, it is checked whether or not the operation name (opn) corresponding to the operation request is specified in the mapping rule. Note that the operation control devices A2 to A6 other than the highest node can receive the operation name (opn) and the argument (oprd) from the device of the higher node via the network. The argument (o
prd) is the operation name (o
pn), the relative address of pn) is shown, but it is not necessary for the user to directly instruct, and the CPU performs the processing internally.

When the operation name (opn) corresponding to the operation request is defined in the mapping rule, and the corresponding mapping function name (fname) exists in the mapping rule (S
3: YES), the CPU issues the mapping function name (fnam
A mapping function (func) as the entity of e) is searched from the mapping code (S4).

If the corresponding mapping function (func) exists in the mapping code (S5: YES), the CP
U performs a data operation on a database in its own node as a back-end processor according to an operation procedure based on the mapping function (func) (S6). For example, a search is performed on a database based on a mapping function of a search algorithm, and the search result is returned to the user.

Then, the CPU transmits the operation name (opn) and the argument (oprd) accepted in S1 to the device of the lower node by functioning again as the front-end processor (S7). End the data operation processing. In the operation control devices A4 to A6, which are the lowest nodes, the data operation process ends when S6 ends. Further, the timing of transmitting the operation name (opn) and the argument (oprd) to the device of the lower node may be performed immediately after S1 or in parallel with a series of processing of S2 to S6.

In S5, when the corresponding mapping function (func) does not exist in the mapping code (S5).
5: NO), the CPU notifies the user of the data operation error (S8), and then proceeds to S7. In addition,
The data operation process may be ended without transmitting the operation name (opn) and the argument (oprd) to the device of the lower node when the user is notified of the data operation error.

Also, in S3, if the corresponding mapping function name (fname) does not exist in the mapping rule (S3: NO), the CPU returns to S8 to inform the user that a data operation error has occurred. move on.

According to this, each of the operation control devices A1 to A6
Databases 110, 120, 130, 140, 15
Even if the operation request is common to 0 and 160, a mapping function of a different operation procedure can be defined for each of the operation control devices A1 to A6. Calling units 310, 320, 3
30, 340, 350, 360 and mapping rule defining sections 410, 420, 430, 440, 450, 46
0 can all be constructed as common. This means that when constructing a database management system that includes multiple heterogeneous databases and back-end processors, it is possible to easily build application programs as front-end processors simply by defining standard operations using mapping rules. . Further, by dynamically changing the mapping function or the mapping rule for each of the operation control devices A1 to A6, the databases 110, 120, 130, 140, 150, and 160 are dynamically executed completely different data operations. You can also.

That is, according to the operation control system described above, the databases 110, 120, 130, 140,
The correspondence between the types of operation requests to 150 and 160 and the mapping function to be executed by the back-end processor in response to each operation request is defined as a mapping rule,
A function corresponding to the operation request can be designated and executed by the back-end processor based on the mapping rule. Thereby, various databases 110 and 12
In order to construct a front-end processor as an application program corresponding to 0, 130, 140, 150, and 160, it is not necessary to combine a plurality of program modules corresponding to various back-end processors. It is only necessary to define a mapping rule indicating the correspondence with the name, and the application program as a whole can have a relatively simple configuration. In short, various databases 110 and 12
It is possible to easily construct a front-end processor for transferring operation requests to 0, 130, 140, 150, and 160.

The present invention is not limited to the above embodiment.

The operation target is not limited to the database, but may be simple data or objects.

As shown in FIG. 2, the database 110,
Although 120, 130, 140, 150 and 160 are hierarchized for each of the operation control devices A1 to A6 via the network, they may be built in one computer device. In this case, the front-end processor as the operation calling unit and the mapping rule defining unit:
Only one computer device may be used.

In the mapping rule defining section 40 shown in FIG. 1, a plurality of mapping function names may be defined as mapping rules for one operation name, that is, a plurality of types of backend processors (mapping rules) may be defined. Code).

(Supplementary Note 1) An operation control device having a function as a front-end processor that receives an operation request for an arbitrary operation target and causes a back-end processor to execute an operation corresponding to each operation target. Mapping rule defining means for defining, as a mapping rule, the correspondence between the type of operation request for the operation target and the execution operation by the back-end processor; and the execution of the back-end processor in response to the operation request for the arbitrary operation target An operation control device, comprising: an execution operation designating unit that designates an operation to be performed based on the mapping rule defined by the mapping rule defining unit.

(Supplementary Note 2) There are a plurality of back-end processors, each of which has a different operation procedure for each corresponding operation target, and each back-end processor has various executable operation procedures as a set of functions. 2. The operation control device according to claim 1, wherein the operation control designating means is provided, and the execution operation designating means designates, for each of the back-end processors, the function according to the operation request based on the mapping rule.

(Supplementary note 3) The operation control device according to supplementary note 1 or 2, wherein the mapping rule defining unit and the execution operation designating unit are provided as a pair for each of the operation targets.

(Supplementary note 4) The operation control device according to any one of Supplementary notes 1 to 3, wherein each of the operation objects is distributed as a pair with the corresponding back-end processor.

(Supplementary Note 5) The operation control device according to any one of Supplementary notes 1 to 4, wherein the operation target is a database.

(Supplementary note 6) The operation control device according to any one of supplementary notes 1 to 5, wherein the back-end processor is a database server.

(Supplementary Note 7) An operation control system having a function as a front-end processor that receives an operation request for an arbitrary operation target and causes a back-end processor to execute an operation corresponding to each operation target. Mapping rule defining means for defining, as a mapping rule, the correspondence between the type of operation request for the operation target and the execution operation by the back-end processor; and the execution of the back-end processor in response to the operation request for the arbitrary operation target An operation control system, comprising: an execution operation specifying unit that specifies an operation to be performed based on the mapping rule specified by the mapping rule specifying unit.

(Supplementary Note 8) A computer program as a front-end processor that receives an operation request for an arbitrary operation target and causes a back-end processor to execute an operation corresponding to each operation target. And a mapping rule defining program for defining the correspondence between the type of the operation and the execution operation by the back-end processor as a mapping rule, and the operation to be executed by the back-end processor in response to an operation request for the arbitrary operation target And an execution operation designating program for designating the program based on the mapping rule defined according to the mapping rule defining program.

[0044]

As described above, according to the present invention, the correspondence between the type of operation request for an arbitrary operation target and the operation to be executed by the back-end processor in response to each operation request is defined as a mapping rule. Based on this mapping rule, an operation according to the operation request can be designated and executed by the back-end processor.
For example, to build a front-end processor as an application program corresponding to various databases, it is not necessary to combine a plurality of program modules corresponding to various back-end processors. Since a relatively simple configuration is sufficient as a whole, a front-end processor for transferring an operation request to an arbitrary database can be easily constructed.

In response to an operation request, a function prepared for each back-end processor is specified based on a mapping rule, and each back-end processor is operated according to an operation procedure described by such a function. it can. When a front-end processor that performs such functions is provided for each operation target and each operation target is distributed together with the back-end processor, the front-end processor serves as a client to a hierarchical database, a network database, a relational database, etc. While used, the back-end processor can be used as a database server that provides data manipulation functions.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an embodiment of an operation control device according to the present invention.

FIG. 2 is an explanatory diagram for describing an operation control system in which operation control devices are hierarchized as an example;

FIG. 3 is a flowchart showing an operation procedure of a data operation process executed by each operation control device.

[Explanation of symbols]

A, A1 to A6 Operation control device 10, 110, 120, ... Database 20, 210, 220, ... Mapping code 30, 310, 320, ... Operation calling unit (execution operation designating means) 40, 410, 420, ... Mapping rule Definition part (mapping rule definition means)

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Claims (5)

[Claims] An operation control device having a function as a front-end processor for receiving an operation request for an arbitrary operation target and causing a back-end processor to execute an operation corresponding to each operation target, the operation control device comprising: Mapping rule defining means for defining, as a mapping rule, a correspondence relationship between a type of operation request to the server and an execution operation by the back-end processor, and the back-end processor to execute in response to an operation request to the arbitrary operation target An operation control device, comprising: an execution operation designating unit that designates an operation based on the mapping rule defined by the mapping rule defining unit. 2. A plurality of back-end processors having different operation procedures for each corresponding operation target, and each back-end processor is provided with various executable operation procedures as a set of functions. 2. The operation control device according to claim 1, wherein the execution operation designating unit designates, for each of the back-end processors, the function according to an operation request based on the mapping rule. 3. 3. The operation control device according to claim 1, wherein the mapping rule defining unit and the execution operation designating unit are provided as a pair for each operation target. 4. An operation control system having a function as a front-end processor that receives an operation request for an arbitrary operation target and causes a back-end processor to execute an operation corresponding to each operation target. Mapping rule defining means for defining, as a mapping rule, a correspondence relationship between a type of operation request to the server and an execution operation by the back-end processor, and the back-end processor to execute in response to an operation request to the arbitrary operation target An operation control system, comprising: an execution operation specifying unit that specifies an operation based on the mapping rule specified by the mapping rule specifying unit. 5. A computer program as a front-end processor for receiving an operation request for an arbitrary operation target and causing a back-end processor to execute an operation corresponding to each operation target, wherein the type of the operation request for the arbitrary operation target is And a mapping rule defining program for defining the correspondence between the execution operation by the back-end processor as a mapping rule, and an operation to be executed by the back-end processor in response to an operation request for the arbitrary operation target, An execution operation designating program for designating based on the mapping rule defined in accordance with the mapping rule defining program.